view wisdom/lambek's lemma @ 12160:2c8c313864e7 draft

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author HackEso <hackeso@esolangs.org>
date Tue, 19 Nov 2019 01:22:24 +0000
parents d3a12978331a
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Lambek's Lemma, invented by Joachim "Taneb" Lambek, states that initial algebras have inverses. It can be proved with as few as five arrows.